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17th February 2025
A 25-year-old male smoker presents to hospital with two weeks of malaise and arthralgia and two days of haemoptysis and shortness of breath.
A 25-year-old male smoker presents to hospital with two weeks of malaise and arthralgia and two days of haemoptysis and shortness of breath. His respiratory rate is 26, and his oxygen saturations are 93% on 40% oxygen via a Venturi mask. Investigation results include:
Haemoglobin: 77 g/L
Urine dip: blood 3+ protein 1+
Chest radiograph: patchy bilateral pulmonary infiltrates
Anti-glomerular basement membrane antibodies: positive
Which set of pulmonary function tests would be most likely in this patient?
Select the SINGLE most appropriate option from the list below. Select ONE option only.
| FEV1
(% predicted) |
FVC
(% predicted) |
FEV1/FVC ratio | TLCO
(% predicted) |
KCO | |
| A | 82% | 85% | 0.8 | Low | Low |
| B | 60% | 85% | 0.61 | Low | Low |
| C | 60% | 85% | 0.61 | High | Low |
| D | 82% | 85% | 0.8 | Low | High |
| E | 82% | 85% | 0.8 | High | High |
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